Evaluation of the Influence of Defects on the Strength of Pe100 Buried Polyethylene Pipe

Posted: 28 Mar 2024

See all articles by Ioana-Daniela Manu

Ioana-Daniela Manu

Petroleum-Gas University of Ploiesti

Marius Gabriel Petrescu

Petroleum-Gas University of Ploiesti

Naim Ramadan Ibrahim

Petroleum-Gas University of Ploiesti

Costin Nicolae Ilinca

Petroleum-Gas University of Ploiesti

Abstract

The water transport system (intake and distribution network) represents the most extensive component of the water supply system. As a rule, the pipe, as a tubular constructive element, which serves to create water transport systems is laid in the ground at a depth at least equal to the depth of frost in the area. High-density polyethylene (HDPE) is also found among the main types of materials used to make pipes for the pressurized water transport system [1]. The fundamental basis of the design of a buried pipeline is the interactive system formed by the pipe and the loads to which it is subjected. Loads are permanent, such as soil overloading, weight of asphalt (if any), and self-weight of the pipe, as well as variable loads, such as uniformly distributed surface load, live load, weight of transported fluid, and loading from internal or external pressure, varying of the atmospheric one [2]. All these loads cause different effects on the buried polyethylene pipe. Thus, the stresses created can cause the limit state to be reached in the wall of the defective pipe. It is required that the percentage of the pipe wall thickness shown by possible scratches or surface defects is less than 10%. In case of exceedance, the respective defect must be investigated. The assumption that a lack of material defect, an axially oriented notch (in which the principal stresses are perpendicular to the sides of the defect) existing on the surface of the HDPE pipe subjected to combined pressure, in general, will lead to a faster failure of the pipe unless the defect is circumferential, it must be verified.

Suggested Citation

Manu, Ioana-Daniela and Petrescu, Marius Gabriel and Ibrahim, Naim Ramadan and Ilinca, Costin Nicolae, Evaluation of the Influence of Defects on the Strength of Pe100 Buried Polyethylene Pipe. 9TH INTERNATIONAL CONFERENCE ON FRACTURE OF POLYMERS, COMPOSITES & ADHESIVES:P.14, Available at SSRN: https://ssrn.com/abstract=4775822

Ioana-Daniela Manu (Contact Author)

Petroleum-Gas University of Ploiesti ( email )

B-dul Bucureşti, nr. 39
PO BOX 52
Ploiesti, 100680
Romania

Marius Gabriel Petrescu

Petroleum-Gas University of Ploiesti ( email )

B-dul Bucureşti, nr. 39
PO BOX 52
Ploiesti, 100680
Romania

Naim Ramadan Ibrahim

Petroleum-Gas University of Ploiesti ( email )

B-dul Bucureşti, nr. 39
PO BOX 52
Ploiesti, 100680
Romania

Costin Nicolae Ilinca

Petroleum-Gas University of Ploiesti ( email )

B-dul Bucureşti, nr. 39
PO BOX 52
Ploiesti, 100680
Romania

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